What is SQL? Why SQL? History of Oracle: (Different versions of
... CREATE TABLE - Creates a new table ALTER TABLE - Modifies a table DROP TABLE - Deletes a table CREATE INDEX - Creates an index (search key) DROP INDEX - Deletes an index ...
... CREATE TABLE - Creates a new table ALTER TABLE - Modifies a table DROP TABLE - Deletes a table CREATE INDEX - Creates an index (search key) DROP INDEX - Deletes an index ...
CODD*s 12 RULES OF RELATIONAL DATABASE
... character strings and that is comprehensive in supporting all the following items : ...
... character strings and that is comprehensive in supporting all the following items : ...
Database System Architectures
... • Server Processes: receive user queries, execute them and sent result back • Lock manager process: implements lock manager functionality, which includes lock grant, lock release, and deadlock detection • Database writer process: for output modified buffer blocks back to disk • Log writer process: p ...
... • Server Processes: receive user queries, execute them and sent result back • Lock manager process: implements lock manager functionality, which includes lock grant, lock release, and deadlock detection • Database writer process: for output modified buffer blocks back to disk • Log writer process: p ...
PPTX
... SQL Server writes to the log file first (.LDF) All transactions have something written to the log file ...
... SQL Server writes to the log file first (.LDF) All transactions have something written to the log file ...
DBch1
... • Could be stored in multiple files or one file • Point: The user doesn’t have to worry about that level of detail! ...
... • Could be stored in multiple files or one file • Point: The user doesn’t have to worry about that level of detail! ...
Dyanmic SQL Field Type
... Populates a drop-down list of choices by querying the REDCap tables using SELECT queries only. The database table being queried must exist in the same MySQL database as the REDCap tables. ONLY REDCap Super Users may add/modify this field type. Advantage of this field type is that it allows you to po ...
... Populates a drop-down list of choices by querying the REDCap tables using SELECT queries only. The database table being queried must exist in the same MySQL database as the REDCap tables. ONLY REDCap Super Users may add/modify this field type. Advantage of this field type is that it allows you to po ...
Oracle Company Overview
... platforms and key standards Ability to handle millions of transactions or many terabytes of data Price: Over $33,000 for the server and then almost $1,000 for user licenses (prices do include 1 year of support) ...
... platforms and key standards Ability to handle millions of transactions or many terabytes of data Price: Over $33,000 for the server and then almost $1,000 for user licenses (prices do include 1 year of support) ...
HALL, ACCOUNTING INFORMATION SYSTEMS
... No data redundancy - Data is stored only once, eliminating data redundancy and reducing storage costs. Single update - Because data is in only one place, it requires only a single update, reducing the time and cost of keeping the database current. Current values - A change to the database made ...
... No data redundancy - Data is stored only once, eliminating data redundancy and reducing storage costs. Single update - Because data is in only one place, it requires only a single update, reducing the time and cost of keeping the database current. Current values - A change to the database made ...
Document
... values are to be retrieved by the query – is a list of the relation names required
to process the query
–
... values are to be retrieved by the query –
